How can I create a rope like object, that can attach object on the bottom and they will both respond to force field
If I understand correctly you want to stick an object to the bottom of your rope? If so you can do it this way:


Select your rope, go in Edit mode and select 2 or 3 of its bottom vertices.





Back to Object mode, select the rope, then select the lantern object, then click ctrlP > Vertex (Triangle) to parent the lantern to the vertices.





If you play the animation the lantern should follow the swing of the rope.